Mixing Powders ?

Loyer

CGN Regular
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Location
SW Ontario
Can Hodgdon's RS (FFG) powder be mixed with real black powder (FFFG) for the main charge ? I have a small amount of each and wanted to make the supply last.
 
It's probably best not to mix powders on purpose and I don't advise it. Again, I mixed 2 bp subs (both pyrodex) together by accident and survived, not blackpowder and pyrodex.
 
Take this with a grain of salt. An other shooter at my club is only able to get pyrodex and he mixes a small amount of black powder (2F) with it to use in a flinter. He uses it as an igniter to speed up the pyrodex. Talking to him he seams to be very safety conscious and careful. But he only uses a small bit of BP. So do at your own risk as I have have not don it my self.
 
Does not sound like a good idea to me. Just because they both burn like black powder, doesn't mean combined they won't have some unexpected reaction.
 
A duplex load could be used. Black powder first, substitute on top. Layered, not mixed. The black can be ignited by a flintlock.
 
By memory (suspect!) the guys that were involved in hind legs shooting at 200 yards, used a duplex load not exceeding 10 percent of the full load, of smokeless powder under a main charge of BP. Pope made a powder measure that actually measure out the two different powders, for reloading on the firing line.

This was the guys like Pope and his peers, shooting Scheutzen (sp?), usually with cartridges loaded with powder on the firing line, and bullets that were seated over the powder charge by loading them from the muzzle, or breech seating them (pushing them in to the rifling at the chamber end of the barrel). Mostly, these guys were shooting 32-40, and similar.

By my reading, the use of 10 percent smokeless powder, had the advantage that the usual BP fouling was not an issue.

But, honestly, I'd be wary of dicking around with the BP subs, as they are still not in the same pressure curves as BP itself is.
 
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